JP2016210611A - Sheet processing device, and image reading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet processing device excellent in the visibility of even a small sheet loaded on a discharge loading part, and easy for taking out the sheet.SOLUTION: A feed tray 2 loads sheets to be fed to an automatic document transfer device 14. A discharge tray 5 is arranged below the feed tray 2 and loads the sheets discharged from the automatic document transfer device 14. The feed tray 2 supports the one end side of a width direction perpendicular to the sheet transportation direction of the sheets loaded on the feed tray 2. A front side regulation plate 3 can support the other end side of the width direction of the loaded sheets and can move the same toward a back side regulation plate 4 thereby to save the same from above the discharge tray 5. As a result, the document on the discharge tray 5 can be visually confirmed through the saved space.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sheet processing apparatus such as a printer, an image reading apparatus, and a punching apparatus.

  Unprocessed sheets stacked on the feeding stacking unit, such as printers, image reading devices, and punching devices, are transported to a predetermined processing unit, sheet processing is performed, and processed sheets are transported to the discharge stacking unit. Stacked sheet processing apparatuses are widely used.

  In the sheet processing apparatus, when the discharge stacking unit is disposed below the feed stacking unit, the visibility of the sheets stacked on the discharge stacking unit becomes low because the feed stacking unit becomes an obstacle. In a sheet processing apparatus in which the visibility of the sheets stacked on the discharge stacking unit is low, it becomes easy to forget to take out processed sheets.

  In Patent Documents 1 and 2, the side of the feeding and stacking unit is cut away to improve the visibility of the sheets stacked on the discharge stacking unit.

JP 2006-52077 A JP 2009-202988 A

  The feeding and stacking unit needs to stack the maximum width sheet that can be processed. For this reason, the visibility of the sheets stacked on the discharge stacking unit below the feeding stacking unit decreases as the sheet processing apparatus has a larger maximum processable sheet size. As shown in Patent Document 1, when an end regulating member that regulates an end surface in the width direction of the sheet is provided in the feeding stacking unit, the length in the width direction of the feeding stacking unit is larger than that of the maximum width sheet. Also gets longer.

  As a result, small sheets such as postcards and photographs stacked on the discharge stacking unit are hidden under the feeding stacking unit, and are difficult to see and take out.

  An object of the present invention is to provide a sheet processing apparatus that is excellent in visibility even for small sheets stacked on a discharge stacking unit and that can be easily taken out.

  The sheet processing apparatus according to the present invention is disposed below the processing unit, a processing unit that processes sheets, a feeding stacking unit that stacks sheets fed to the processing unit, and is discharged from the processing unit. A discharge stacking unit that stacks the stacked sheets. The feeding stacking unit includes a first stacking unit that supports one end side in the width direction perpendicular to the sheet conveyance direction of the sheets stacked on the feeding stacking unit, and the width direction of the stacked sheets. And a second stacking portion that can be moved toward the first stacking portion and retracted from above the discharge stacking portion.

  In the sheet processing apparatus of the present invention, the second stacking unit can be moved toward the first stacking unit and can be retracted from above the discharge stacking unit. For this reason, even a small sheet stacked on the discharge stacking unit has excellent visibility and can be easily taken out.

1 is a perspective view of an image forming apparatus. It is explanatory drawing of a structure of an image reading apparatus. It is explanatory drawing of operation | movement of a front side regulation board and a rear side regulation board. It is a bottom view of a feeding tray. It is a perspective view of an interlocking mechanism. It is explanatory drawing of the movement position of a front side regulation board. It is explanatory drawing of the interlocking | linkage of a front side regulation board and a rear side regulation board. It is explanatory drawing of the sensor arrangement | positioning in a feeding tray. FIG. 6 is an explanatory diagram illustrating a state in which a large-size sheet original is discharged by an image reading apparatus according to a comparative example. FIG. 10 is an explanatory diagram of a state in which a small-size sheet original is discharged by an image reading apparatus of a comparative example. It is explanatory drawing of the number of parts of the feeding tray of a comparative example. It is explanatory drawing of the drive mechanism of a front side regulation board and a rear side regulation board. FIG. 10 is a block diagram of control of the image reading apparatus in the second embodiment. 10 is a flowchart of control in the second embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Embodiment 1>
(Image reading device)
FIG. 1 is a perspective view of the image forming apparatus. FIG. 2 is an explanatory diagram of the configuration of the image reading apparatus.

  As shown in FIG. 1, the image forming apparatus 100 is equipped with an image reading device 20 on the upper surface. The image reading device 20 includes an image reading unit 19 and an automatic document feeder 14. The image reading unit 19 is a so-called flat bed scanner. The automatic document feeder 14 takes in the originals placed on the feeding tray 2 one by one from the top, executes image reading by the image reading unit 19, and sequentially discharges the originals after image reading to the discharge tray 5. To load.

  As shown in FIG. 2, the image reading unit 19 includes a reading head 17 including an image sensor. The image reading device 20 can execute a flow reading mode in which the original is passed through the glass plate 18 by the automatic document feeder 14 and the image on the lower surface of the document is read with the reading head 17 stopped under the glass plate 18. It is. The image reading apparatus 20 can execute a pressure plate reading mode in which an original is placed on the image reading unit 19 and the image of the lower surface of the original is read by moving the reading head 103 in the horizontal direction in the drawing.

(Automatic document feeder)
As shown in FIG. 1, the feeding tray 2 can stack a plurality of documents. A front side restricting plate 3 and a rear side restricting plate 4 that are movable in the width direction of the document in conjunction with each other are provided on the base side of the feeding tray 2. When copying a plurality of originals, the user places the original bundle on the feeding tray 2 and manually operates the front side restricting plate 3 and the rear side restricting plate 4 to press the end face in the width direction of the original bundle. The user presses down the start switch 28 on the operation panel 29 to start reading an image of the document.

  As shown in FIG. 2, the original G loaded on the feeding tray 2 is taken in by the pickup roller 15, and image reading is performed in the process of passing through the reading head 17, and then discharged to the discharge tray 5. The pickup roller 15 rotates in contact with the uppermost document of the bundle of documents stacked on the feeding tray 2, and feeds the uppermost document to the feed roller 21. The feed roller 21 rotates in the document transport direction and sends the document delivered from the pickup roller 15 toward the registration roller 23.

  The retard roller 22 drives the document in the direction opposite to the conveyance direction with a torque generated by a torque limiter (not shown). The retard roller 22 presses the feed roller 21 through the original and rotates in a driven manner, thereby sending the uppermost original sent from the pickup roller 15 toward the registration roller 23.

  When only one document has been conveyed to the nip N, the retard roller 22 is rotated in the conveyance direction by the document, and the document passes through the nip N in the conveyance direction. However, when two or more originals are conveyed while being overlapped, the retard roller 22 rotates in the direction opposite to the conveyance direction and pushes back the original other than the uppermost one to the feeding tray 2. As a result, the uppermost document is transported in the transport direction, while the second and subsequent documents remain on the feed tray 2.

  The registration roller 23 waits in a stopped state, and corrects the skew of the original conveyed by the feed roller 21. The registration roller 23 starts to rotate in accordance with the reading timing of the document and conveys the document to the reading area on the glass plate 18. A white roller 24 is disposed in a reading area on the glass plate 18. The white roller 24 rotates while bringing the document into close contact with the glass plate 18 and passes the document over the glass plate 18.

  A read roller 25 disposed upstream of the white roller 24 delivers the document delivered from the registration roller 23 to the white roller 24. The read roller 26 disposed downstream of the white roller 24 delivers the document delivered from the white roller 24 to the discharge roller 27.

  A discharge roller 27 disposed downstream of the lead roller 26 discharges the document delivered from the lead roller 26 to the discharge tray 5. The discharge tray 5 is disposed below the feeding tray 2 and stacks documents on which image reading has been executed.

  As described above, the automatic document feeder 14 as an example of a processing unit processes a sheet. A feeding tray 2, which is an example of a feeding and stacking unit, stacks sheets to be fed to the automatic document feeder 14. A discharge tray 5, which is an example of a discharge stacking unit, is disposed below the feeding tray 2 and stacks sheets discharged from the automatic document feeder 14. The feeding tray 2, which is an example of a first stacking unit, supports one end side in the width direction perpendicular to the sheet conveyance direction of the sheets stacked on the feeding tray 2.

(Feed tray)
FIG. 3 is an explanatory view of the operation of the front side regulating plate and the rear side regulating plate. In FIG. 3, (a) is when processing a large sheet, and (b) is when processing a small sheet. Specifically, the large size sheet is an A4 size laterally fed sheet. The small size sheet is an A5 size transverse feed sheet.

  As shown in FIG. 1, the front side regulating plate 3 is provided so as to be able to enter and exit from the side surface of the feeding tray 2 in the width direction of the document. The front side regulating plate 3 supports the sheets stacked on the feeding tray 2 together with the feeding tray 2. The rear side regulating plate 4 is provided so as to be slidable in the width direction of the document along the upper surface of the feeding tray 2. The front side restricting plate 3 and the rear side restricting plate 4 move symmetrically in the width direction of the document in conjunction with each other by an interlocking mechanism (30) described later. Thereby, even if the size of the document changes, the center position in the width direction of the document on the feeding tray 2 is kept constant.

  As shown in FIG. 3A, the front side regulating plate 3 has a placement surface 3 a protruding from the feeding tray 2 when a large-size document is set on the feeding tray 2. As shown in FIG. 3B, the front side regulating plate 3 has the placement surface 3 a stored in the feeding tray 2 when a small-size document is set on the feeding tray 2.

  As shown in FIG. 3B, the front side regulating plate 3 can be retracted from above the discharge tray 5 by moving in the width direction toward the rear side regulating plate 4. The front side regulating plate 3 is capable of feeding the sheet with the upper side of the discharge tray 5 being wide open by moving the front side regulating plate 3 to a position corresponding to the length in the width direction of the sheet with respect to the feeding tray 2. The front side regulating plate 3 can be moved to a position with good visibility with respect to the sheet on the discharge tray 5 according to the size of the sheet on the feeding tray 2.

  The front side regulating plate 3 overlaps with the feeding tray 2 in the height direction and can move in the width direction along the sheet stacking surface at a position lower than the sheet stacking surface of the feeding tray 2. The front side regulating plate 3 is supported so that it can be taken in and out in the width direction from the feeding tray 2.

  The front side regulating plate 3 supports the sheets stacked on the leading side in the sheet conveying direction of the sheets stacked on the feeding tray 2, and does not impair support in the conveying direction of the sheets stacked on the feeding tray 2. The length is formed so short. As a result, the entire shape of the feeding tray 2 and the front side regulating plate 3 becomes a shape in which the rear end side in the sheet conveying direction is cut out, and after the sheet has been fed, the sheet on the discharge tray 5 is On the other hand, the visibility through this notch is ensured.

  As described above, the image reading device 20 reads the image of the sheet fed from the feeding tray 2 and discharges it to the discharge tray 5. The front side regulating plate 3 is arranged on the side where the user is positioned when placing a sheet on the feeding tray 2 in the image reading apparatus 20 which is an example of a sheet processing apparatus. The front side regulating plate 3 is disposed on the side where the user is positioned when taking out a sheet from the discharge tray 5 in the image reading device 20. The front side regulating plate 3 is disposed on the side where the user is positioned when operating the image reading device 20.

(Interlocking mechanism)
FIG. 4 is a bottom view of the feeding tray. FIG. 5 is a perspective view of the interlocking mechanism. FIG. 6 is an explanatory view of the movement position of the front side regulating plate. FIG. 7 is an explanatory view of the interlocking of the front side regulating plate and the rear side regulating plate. 6 and 7, (a) is when large-size sheets are stacked, and (b) is when small-size sheets are stacked.

  As shown in FIG. 4, the interlocking mechanism 30 is disposed between the back surface of the feeding tray 2 and the substrate holding member 13. The interlocking mechanism 30 slides the front side restricting plate 3 and the rear side restricting plate (4: FIG. 1) symmetrically in conjunction with one slide movement across the sheet conveyance center line.

  FIG. 5 is a perspective view showing a state in which the substrate holding member 13 is made transparent in FIG. As shown in FIG. 5, the rack 10 is fixed to the front side regulating plate 3. The rack 10 is supported by the substrate holding member (13) so as to be slidable along the back surface of the feeding tray 2, and meshes with the interlocking gear 6. On the lower surface of the feeding tray 2, a rotation shaft that rotatably supports the interlocking gear 6 and rotation shafts of the toothed belt gears 7 and 8 that rotatably support the toothed belt gear 7 are fixed. .

  The drive receiving portion 4 d of the rear side regulating plate 4 is fixed to a toothed belt 9 that is hung on the toothed belt gears 7 and 8. The toothed belt 9 is shown by omitting teeth. A drive gear 7 d provided coaxially with the toothed belt gear 7 meshes with the interlocking gear 6. The rack 10 and the toothed belt gear 7 rotate in opposite directions in conjunction with each other via the interlocking gear 6. For this reason, the front side restricting plate 3 and the rear side restricting plate 4 slide and move symmetrically across the sheet conveyance center line.

  As shown in FIG. 6A, the front side regulating plate 3 and the rear side regulating plate 4 are moved outward in the width direction when a large-size document is set on the feeding tray 2. . As shown in FIG. 7A, a large-size document is supported by the placement surface 3a of the front side restriction plate 3 and the feeding tray 2, and the restriction surface 3b of the front side restriction plate 3 and the rear side restriction plate. The position in the width direction is regulated by being sandwiched between the four regulating surfaces 4b.

  As shown in FIG. 6B, the front side regulating plate 3 and the rear side regulating plate 4 are moved inward in the width direction when a small-size document is set on the feeding tray 2. . As shown in FIG. 7B, the small-size document is supported by the feeding tray 2, and the placement surface 3 a of the front side restriction plate 3 is accommodated in the rear side restriction plate 4.

  As described above, the restricting surface 3b of the front side restricting plate 3 which is an example of the other end restricting portion is the end face on the other end side of the sheet fixed to the front side restricting plate 3 and stacked on the feeding tray 2. To regulate. The restricting surface 4b of the rear side restricting plate 4 which is an example of the one end side restricting portion is provided on the feeding tray 2 so as to be movable in the width direction, and restricts the end face on one end side of the sheets stacked on the feeding tray 2. . The interlocking mechanism 30 which is an example of the interlocking mechanism interlocks the rear side restriction plate 4 and the front side restriction plate 3 so as to move symmetrically in the width direction.

  The rack 10, which is an example of a drive member, is supported by the feed tray 2 so as to be movable in the width direction and is fixed to the front side regulating plate 3. The toothed belt 9, which is an example of a belt member, is fixed to the rear side regulating plate 4, is stretched around a toothed belt gear 7, which is an example of a rotating body provided on the feeding tray 2, and moves in the width direction. The interlocking gear 6, which is an example of a transmission rotating body, transmits rotation between the rack 10 and the toothed belt gear 7.

(Sensor arrangement)
FIG. 8 is an explanatory diagram of sensor arrangement in the feeding tray. FIG. 8 is a perspective view showing the state in which the feeding tray 2 is made transparent and FIG. 2 is viewed from above.

  As shown in FIG. 8, the size detection substrate 11 to which the photo interrupters 12 a, 12 b, and 12 e are attached is disposed in the interval between the feeding tray (2) and the substrate holding member 13.

  As shown in FIG. 5, the rack 10 is formed with flags 10a and 10b detected by the photo interrupters 12a and 12b, and 10e, 10f and 10g detected by the photo interrupter 12e. Since the outputs of the photo interrupters 12a, 12b, and 12e change according to the position of the rack 10, a plurality of types of document sizes can be distinguished by the combination of ON / OFF of the photo interrupters 12a, 12b, and 12e.

(Comparative example)
FIG. 9 is an explanatory view showing a state in which a large-size sheet original is discharged by the image reading apparatus of the comparative example. FIG. 10 is an explanatory diagram of a state in which a small-size sheet original is discharged by the image reading apparatus of the comparative example. 9 and 10, (a) shows a state in which the sheet is discharged, and (b) shows a state in which the feeding tray is lifted.

  As shown in FIG. 9A, the image reading device 20H of the comparative example cuts a part 2K of the feeding tray 2H, thereby improving the visibility of the large-size sheet document discharged to the discharge tray 5. Secured. Further, as shown in FIG. 9B, the visibility of a large-size sheet document discharged to the discharge tray 5 can be improved by lifting the feeding tray 2H by hand, and the front side (front side). It is also easy to take out large-size sheets.

  However, as shown in FIG. 10A, when the image reading apparatus 20H of the comparative example processes a small-size sheet document, a part other than the notch 2K of the feeding tray 2H is a document on the discharge tray 5. The upper part of is covered. In the image reading apparatus 20H of the comparative example, the visibility of the original of the small size sheet (A5 size laterally fed sheet) discharged to the discharge tray 5 is lost. Further, as shown in FIG. 10B, for a small-size sheet document, even if the feeding tray 2H is lifted by hand, the visibility of the document discharged to the discharge tray 5 can hardly be improved. . As shown in FIG. 11A, both when the front side restricting plate 3H and the rear side restricting plate 4H are moved outward, as shown in FIG. 11B, when they are moved inward. The lower area covered by the feeding tray 2H is the same.

  The image reading device 20H may be used to copy important documents. It is not preferable that the copied document is easily forgotten due to the low visibility of the document on the discharge tray 5. As shown in FIG. 10B, the feeding tray 2H can be lifted in order to check the document on the discharge tray 5. However, considering the possibility of forgetting to lift, the document tray is prevented from being forgotten. However, it is desirable to improve the visibility of the document discharged to the discharge tray 5. Even when the feeding tray 2H is not lifted, it is preferable that sufficient visibility of the original on the discharge tray 5 can be secured.

  Accordingly, it has been proposed to extend the notch 2K shown in FIG. 10A to a position where the visibility of the small-size sheet original on the discharge tray 5 can be secured. However, when the notch 2K is expanded toward the base of the feeding tray 2H, a large document such as an A3 size longitudinal feeding sheet easily falls from the feeding tray 2H. When the notch 2K approaches the base of the feed tray 2H, it becomes impossible to incorporate into the feed tray 2H an interlocking mechanism that supports and moves the front side regulating plate 3 and the rear side regulating plate 4 symmetrically.

  On the other hand, in the image reading apparatus 20 according to the first embodiment, as shown in FIG. 3, the front side regulating plate 3 has a placement surface 3 a that is a supporting surface of the document on the feeding tray 2. The entire placement surface 3a is movable inward in the width direction of the document. Thereby, in the image reading apparatus 20H of the comparative example, the same visibility as that obtained by extending the notch 2k to the base of the feeding tray 2H is realized for the original on the discharge tray 5. Depending on the configuration, large documents such as A3 size vertical feeds do not easily fall from the feed tray 2. The interlocking mechanism 30 that moves the front side restricting plate 3 and the rear side restricting plate 4 symmetrically cannot be incorporated into the feeding tray 2. In order to ensure the visibility of the document on the discharge tray 5, it is not necessary to lift the feeding tray 2 purposely.

(Effect of Embodiment 1)
In the first embodiment, when the front side regulating plate 3 is stored or protrudes forward from the feeding tray 2, the depth width of the feeding tray 2 changes according to the size of the document. When a small-size sheet document is set, the front side regulating plate 3 is stored in the feeding tray 2, and when a large-size sheet document is set on the feeding tray 2, the front side regulating plate 3 is used by the user. Protrudes to the side. As a result, it is possible to visually recognize a small-sized sheet document discharged to the discharge tray 5 and to improve the ease of taking out the document from the discharge tray 5.

  In the first embodiment, the visibility of even a small-size document on the discharge tray 5 can be ensured by varying the depth width of the feed tray 2 in accordance with the size of the document to be fed. By aligning the front side regulating plate 3 with the document on the feed tray 2, the depth width of the feed tray 2 fluctuates, the visibility of the document size can be secured, and the ease of taking out the document is improved. doing. Since the visibility and ease of taking out of the document discharged to the discharge tray 5 are improved, it is possible to prevent the user from forgetting to remove the document on the discharge tray 5.

  In the first embodiment, the front side regulating plate 3, which is an example of a second stacking unit, can support the other end side in the width direction of the stacked sheets and is moved toward the rear side regulating plate 4. It can be retracted from above the discharge tray 5. Therefore, it is possible to visually recognize the original on the discharge tray 5 through the retracted space.

  In the first embodiment, the front side regulating plate 3 is movable to a position corresponding to the length in the width direction of the sheet with respect to the feeding tray 2. For this reason, it is possible to move to a position with good visibility with respect to the sheet on the discharge tray 5 according to the size of the sheet on the feeding tray 2.

  In the first embodiment, the front side regulating plate 3 overlaps with the feeding tray 2 in the height direction and can move in the width direction. For this reason, the front side regulating plate 3 can be moved toward the feeding tray 2 without moving or deforming the feeding tray 2.

  In the first embodiment, the front side regulating plate 3 is movable in the width direction along the sheet stacking surface at a position lower than the sheet stacking surface of the feeding tray 2. For this reason, it is not necessary for the front side regulating plate 3 to rub against the lower surface of the sheets stacked on the feeding tray 2 as the front side regulating plate 3 moves.

  In the first embodiment, the front side regulating plate 3 is supported so that it can be taken in and out in the width direction from the feeding tray 2. For this reason, the thickness of the feeding tray 2 can be reduced by supporting the front side regulating plate 3 with a simple slide mechanism.

  In the first embodiment, the front side regulating plate 3 supports the other end side in the width direction of the sheets stacked on the leading side in the sheet conveying direction of the sheets stacked on the feeding tray 2. For this reason, it is possible to reduce the area of the feeding tray 2 by cutting out the front side regulating plate 3 on the rear end side in the sheet conveying direction of the sheet, thereby making it compact.

<Embodiment 2>
FIG. 12 is an explanatory view of the drive mechanism of the front side regulating plate and the rear side regulating plate. FIG. 13 is a block diagram of the control of the image reading apparatus in the second embodiment. FIG. 14 is a flowchart of control in the second embodiment.

  As shown in FIG. 13, the control unit 120 of the image reading apparatus 20 includes a RAM 122 used as a storage area for input data, a work storage area, and the like, and a ROM 123 that stores a program such as a control procedure, as in the image forming system. A CPU 121 is provided as control means. The CPU 121 is connected to various sensors and actuators through the I / O port 124 in order to control the image reading unit 210 and the document feeding unit 220.

  The input unit of the I / O port 124 includes a paper feed document detection sensor S4 that detects a document on the feed tray 2, a registration sensor S1 that detects the leading edge of the document, a read sensor S2 that detects document reading timing, and a stay at the time of discharge. A discharge sensor S3 that detects a jam, a delay jam, and the like, a document size sensor S5 that detects the size of the document, and a discharged document detection sensor S6 that detects whether there is a document on the discharge tray are connected.

  The output section of the I / O port 124 includes an optical motor M1 that moves the scanning unit 250, a separation motor M2 that drives the separation roller, a read motor M3 that drives the read roller, and a feed motor M4 that drives the feed roller. , A platen motor M5 that drives the platen roller, a registration motor M6 that drives the registration roller, a fan motor M7 that attracts the platen conveyance unit 225 to flow the document away from the surface of the reading glass 240, and a side that moves the side regulating plate A restriction plate motor M8 is connected.

  In the first embodiment, after the user places the document bundle on the feeding tray 2, the front side restriction plate 3 and the rear side restriction plate 4 are moved by hand and brought into contact with the end face of the document bundle. On the other hand, in the second embodiment, as shown in FIG. 12, the user moves the front side restricting plate 3 and the rear side restricting plate 4 by the motor M8 after placing the document bundle on the feeding tray 2. It is brought into contact with the end face of the original bundle. When the last sheet on the feed tray 2 is fed, the front side regulating plate 3 is moved inward in the width direction by the motor M8, and the visibility of the original on the discharge tray 5 is greatly improved.

  In the second embodiment, since the mechanism other than the motor M8 is the same as that of the first embodiment, the same components as those in the first embodiment are denoted by the same reference numerals in FIG. Omitted.

  As shown in FIG. 12, the control unit 120 can control the motor M8 to move the front side regulating plate 3 and the rear side regulating plate 4 to the center side or the outside in the width direction in conjunction with each other. The control unit 120, which is an example of a control unit, moves the front side regulating plate 3 toward the rear side regulating plate 4 after the sheets stacked on the feeding tray 2 are fed to the automatic document feeder 14. Retreat from above the discharge tray 5.

  As shown in FIG. 14, when a document is placed on the feed tray 2 (YES in S11), the control unit 120 reciprocates the front side restriction plate 3 and the rear side restriction plate 4 in the width direction, The document bundle is positioned on the conveyance center line and the end faces are aligned (S12). When the start switch is pushed down (YES in S13), the control unit 120 starts feeding the document (S14).

  When there are no more documents on the feed tray 2 (YES in S15), the control unit 120 moves the front side restricting plate 3 and the rear side restricting plate 4 to the maximum position on the center side to move the documents on the discharge tray 5 Visibility is improved to the maximum (S16). When the control unit 120 detects that the document is removed from the discharge tray 5 by an unshown discharge tray paper presence sensor (YES in S17), the control unit 120 moves the front side restriction plate 3 and the rear side restriction plate 4 outward. It moves and waits for a document to be placed on the feeding tray 2 (S18).

  In the second embodiment, when there is no document in the feeding tray 2, the front side regulating plate 3 is moved to the maximum position on the center side to improve the visibility of the document on the discharge tray 5 to the maximum. It is more difficult to forget to take a document than in the first mode.

<Other embodiments>
The sheet processing apparatus of the present invention is not limited to the specific configuration and control described in the first embodiment. Another embodiment in which a part or all of the configuration of the first embodiment is replaced with an equivalent member is also possible.

  In the first embodiment, the example of the image reading apparatus has been described. However, the sheet processing is not limited to image reading. The sheet processing may be image forming processing such as an ink jet printer, an electrophotographic printer, a facsimile, a copying machine, and a multifunction peripheral.

  In the first embodiment, as shown in FIG. 5, the interlocking mechanism 30 using the toothed belt 9 and the rack 10 has been described. However, the mechanism for interlocking the front side restricting plate 3 and the rear side restricting plate 4 is as follows. Various selections such as cams, links, levers, gears, etc. are possible.

2 Feeding tray, 3 Front side restricting plate 3a Placement surface, 3b, 4b Restricting surface 4 Rear side restricting plate 5 Discharge tray, 6 Interlocking gear 7, 8 Toothed belt gear, 7d Driving gear 9 Toothed belt, 10 Rack 10a, 10b, 10e, 10f, 10g Flag 11 Size detection substrate, 12 Photo interrupter 13 Substrate holding member, 14 Automatic document feeder 15 Pickup roller, 17 Reading head 18 Glass plate, 19 Image reading unit, 20 Image reading device 21 Feed Roller, 22 Retard roller 23 Registration roller, 24 White roller 25, 26 Lead roller, 27 Discharge roller 28 Start switch, 29 Operation panel, 30 Interlocking mechanism G Original

Claims (14)

A processing unit for processing the sheet;
A feeding stacking unit for stacking sheets fed to the processing unit;
A discharge stacking unit disposed below the feeding stacking unit and stacking sheets discharged from the processing unit;
The feeding stacking unit includes a first stacking unit that supports one end side in the width direction perpendicular to the sheet conveying direction of the sheets stacked on the feeding stacking unit, and the other of the stacked sheets in the width direction. A sheet processing apparatus comprising: a second stacking unit that can support an end side and can move away from the discharge stacking unit by moving toward the first stacking unit.   The sheet processing apparatus according to claim 1, wherein the second stacking unit is movable to a position corresponding to a length of the sheet in the width direction with respect to the first stacking unit.   The sheet processing apparatus according to claim 1, wherein the second stacking unit is movable in the width direction so as to overlap the first stacking unit in a height direction.   4. The apparatus according to claim 1, wherein the second stacking unit is movable in the width direction along the sheet stacking surface at a position lower than the sheet stacking surface of the first stacking unit. The sheet processing apparatus according to claim 1.   The sheet processing apparatus according to claim 4, wherein the second stacking unit is supported so as to be able to be taken in and out in the width direction from the first stacking unit.   2. The second stacking unit supports the other end in the width direction of the stacked sheets on the leading side in the sheet conveyance direction of the sheets stacked on the feeding stacking unit. The sheet processing apparatus according to claim 5.   The second stacking section includes a second end regulating section that regulates an end face on the other end side of the sheet that is fixed to the second stacking section and stacked on the feeding stacking section. The sheet processing apparatus according to claim 1. The first stacking unit is provided on the first stacking unit so as to be movable in the width direction, and has an end-side regulating unit that regulates the end surface on the one end side of the sheets stacked on the feeding and stacking unit. And
The sheet processing apparatus according to claim 7, further comprising an interlocking mechanism that interlocks the one end side regulation unit and the second stacking unit so as to move symmetrically in the width direction. The interlocking mechanism is
A driving member supported to be movable in the width direction with respect to the first stacking unit and fixed to the second stacking unit;
A belt member fixed to the first stacking unit, stretched on a rotating body provided in the first stacking unit, and moved in the width direction;
The sheet processing apparatus according to claim 8, further comprising: a transmission rotating body that transmits rotation between the driving member and the rotating body.   Control for moving the second stacking unit toward the first stacking unit and retracting it from above the discharge stacking unit after the sheets stacked on the feeding stacking unit are fed to the processing unit. The sheet processing apparatus according to claim 1, further comprising a unit.   The said 2nd stacking part is arrange | positioned in the said sheet processing apparatus, when a sheet | seat is mounted in the said feeding stacking part, It arrange | positions in the side in which a user is located. The sheet processing apparatus according to item.   The said 2nd stacking part is arrange | positioned in the said sheet processing apparatus at the side where a user is located, when taking out a sheet | seat from the said discharge | emission stacking part. Sheet processing equipment.   The said 2nd stacking part is arrange | positioned in the said sheet processing apparatus at the side where a user is located, when operating the said sheet processing apparatus. Sheet processing device. The sheet processing apparatus according to any one of claims 1 to 13,
The image reading apparatus, wherein the processing unit is an image reading unit that reads an image of a sheet fed from the feeding stacking unit and discharges the image to the discharge stacking unit.

Images